Would you believe that the US policy of continually expanding NATO, combined with a military coup of the democratically elected Ukrainian government in 2014 are more to blame for Putin attacking Ukraine? I wouldn't blame Biden. I'd blame Clinton, Bush, and Obama. But hey, you weren't actually asking to be informed about anything that wasn't CIA approved corporate news talking points. You just wanted a pithy straw man joke. (Side Note - Burning karma to put some truth where people might see it is the only good use for the stuff.)